Spring boot使用Aspose.Slides操做ppt轉PDF、轉圖片

最近要將ppt轉爲PDF和圖片，Apache poi ，jacob都試了下

Apache poi 轉圖片亂碼，處理了，還會存在部分亂碼

jacob對系統依賴比較大，必須是windows還得安裝MS Office，若是同時安裝了WPS，還會調用WPS處理，還出現異常

所以換成了Aspose.Slides，這個是商用的，帶有水印

本文使用的是去除水印的 aspose.slides-19.3.jar（ 獲取資源 提取碼：zhb8）

去除水印的方法 查看

1.建立spring boot項目

2.準備

（1）導入Aspose.Slides的jar包

（2）將license.xml，放到src/main/resources下

（3）修改pom.xml

<dependency>
    <groupId>aspose.slides</groupId>
    <artifactId>slides</artifactId>
    <version>19.3</version>
    <scope>system</scope>
    <systemPath>${basedir}/lib/aspose.slides-19.3.jar</systemPath>
</dependency>

3.轉PDF

目標文件data/CoreThink.pptx

pdf保存data/CoreThink.pdf

package com.slides.ppt.controller; import com.aspose.slides.License; import com.aspose.slides.Presentation; import com.aspose.slides.SaveFormat; import org.springframework.web.bind.annotation.*; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; @RestController @RequestMapping("/api") public class TestOperation { private static InputStream license; /** * 獲取license * * @return
     */
    public static boolean getLicense() { boolean result = false; license = TestOperation.class.getClassLoader().getResourceAsStream("license.xml"); if (license != null) { License aposeLic = new License(); aposeLic.setLicense(license); result = true; } return result; } /** * 轉PDF * * @return
     */ @PostMapping("/convertPDF") public String convertPDF() { // 驗證License
        if (!getLicense()) { return "驗證License失敗"; } try { FileInputStream fileInput = new FileInputStream("data/CoreThink.pptx"); Presentation pres = new Presentation(fileInput); FileOutputStream out = new FileOutputStream(new File("data/CoreThink.pdf")); pres.save(out, SaveFormat.Pdf); out.close(); } catch (Exception e) { return e.getMessage(); } return "轉換成功"; } }

 

4.轉圖片

目標文件data/CoreThink.pptx

圖片保存路徑爲 文件名_JPG即CoreThink_JPG

package com.slides.ppt.controller; import com.aspose.slides.ISlide; import com.aspose.slides.License; import com.aspose.slides.Presentation; import org.springframework.web.bind.annotation.*; import javax.imageio.ImageIO; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; @RestController @RequestMapping("/api") public class TestOperation { private static InputStream license; /** * 獲取license * * @return
     */
    public static boolean getLicense() { boolean result = false; license = TestOperation.class.getClassLoader().getResourceAsStream("license.xml"); if (license != null) { License aposeLic = new License(); aposeLic.setLicense(license); result = true; } return result; } /** * 轉Image * * @return
     */ @PostMapping("/convertImage") public String convertImage() { // 驗證License
        if (!getLicense()) { return "驗證License失敗"; } String fileName = "data/CoreThink.pptx"; File file = new File(fileName); if (!file.exists()) { return "轉換文件不存在"; } String filePath = file.getParent()+File.separator; String dest = filePath + getFileNameNoEx(file.getName())+"_JPG"; File destPath = new File(dest); if (!destPath.exists()) { destPath.mkdir(); } try { FileInputStream fileInput = new FileInputStream(fileName); Presentation pres = new Presentation(fileInput); int i; for (i = 0; i < pres.getSlides().size(); i++) { ISlide slide = pres.getSlides().get_Item(i); int height = (int)(pres.getSlideSize().getSize().getHeight()-150); int width = (int)(pres.getSlideSize().getSize().getWidth()-150); BufferedImage image = slide.getThumbnail(new java.awt.Dimension(width, height)); //每一頁輸出一張圖片
                File outImage = new File(dest+File.separator + (i+1) + ".JPG"); ImageIO.write(image, "JPG", outImage); } } catch (Exception e) { return e.getMessage(); } return "轉換成功"; } /** * 獲取文件名，去除擴展名的 * * @param filename * @return
     */
    private String getFileNameNoEx(String filename) { if ((filename != null) && (filename.length() > 0)) { int dot = filename.lastIndexOf('.'); if ((dot > -1) && (dot < (filename.length()))) { return filename.substring(0, dot); } } return filename; } }

說明：

　　若是沒有驗證License，輸出的會帶水印的，所以要保證 license.xml 能讀取成功，並作驗證

注意：

　　資源文件只容許學習使用，不得用於商業用途，請購買受權正版 aspose官網